*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
body{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
.container{
    width: 352px;
    margin: auto;
}
.title{
    text-align: center;
    margin: 15px;
}
.week,.day{
    display: flex;
    flex-wrap: wrap;
    border: 1px #000 solid;
}
.week span{
    font-weight: bold;
}
.week span,.day span{
    font-family: 微软雅黑 serif;
    text-align: center;
    box-shadow: 1px 1px 1px #ccc;
    width: 50px;
    line-height: 40px;
    height: 40px;
    display: inline-block;
}
.today{
    background: lightskyblue;
    color: #fff;
}
.d{
    color: #999;
}